MS21299-20 — WASHER,FLAT

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

MS21299-20: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.062 INCHES NOMINAL IN, hole_diameter: 1.252 INCHES MINIMUM AND 1.256 INCHES MAXIMUM IN, hardness_rating: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM, overall_diameter: 2.381 INCHES MINIMUM AND 2.391 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-466-6146, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MS21299-20

NSN: 5310-01-466-6146
FSC: 5310 — Nuts and Washers
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)

SPECIFICATIONS

material	STEEL OVERALL
thickness	0.062 INCHES NOMINAL IN
hole_diameter	1.252 INCHES MINIMUM AND 1.256 INCHES MAXIMUM IN
hardness_rating	39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
overall_diameter	2.381 INCHES MINIMUM AND 2.391 INCHES MAXIMUM IN
surface_treatment	CADMIUM OVERALL
peripheral_shape_style	ROUND
center_hole_shape_style	ROUND
end_item_identification	1730-01-268-4715;SOT EQUIPMENT (SE),B-2 BOMBER
cross-sectional_shape_style	RECTANGULAR
material_document_and_classification	MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	5310-01-466-6146

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

OVERALL DIAMETER: 2.381 INCHES MINIMUM AND 2.391 INCHES MAXIMUM IN

•

HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OVERALL

•

CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR

•

SURFACE TREATMENT: CADMIUM OVERALL

•

PERIPHERAL SHAPE STYLE: ROUND

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER	2.381 INCHES MINIMUM AND 2.391 INCHES MAXIMUM IN
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
SURFACE TREATMENT	CADMIUM OVERALL
PERIPHERAL SHAPE STYLE	ROUND
END ITEM IDENTIFICATION	1730-01-268-4715;SOT EQUIPMENT (SE),B-2 BOMBER
MATERIAL	STEEL OVERALL
CENTER HOLE SHAPE STYLE	ROUND

SUBSTITUTES & CROSS-REFERENCES 2

MS21299Reference document

Same NSN cross-reference

Reference document — Secondary reference

NASM21299Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MS21299-20?

MS21299-20 is a WASHER,FLAT.

What parts can replace MS21299-20?

There are 2 known substitutes for MS21299-20: MS21299, NASM21299. Substitute compatibility should be verified for your specific system.

What is the NSN for MS21299-20?

MS21299-20 is cataloged in the U.S. Government catalog under NSN 5310-01-466-6146. This indicates validated use in U.S. government and defense supply chains.

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